text: "I always hide my feelings in the depths of my soul, so that every time I think about them I smile and learn from them, move on," Duong Trieu Vu added?
classes:  No, due to his life's pursuit, Yang Zhaoyu has learned to hide himself.  Also, due to his life's pursuit, Yang Zhaoyu has learned to hide himself.  Yes, due to his life's pursuit, Yang Zhaoyu has learned to hide himself.